
4 port voice card. ISA with SC Bus or PCI with CT Bus. You can use the Bus to connect to other cards having the SC or CT Bus. You can use two or more of these cards to get 8 or more ports. TTS and ASR are supported at an extra cost.
This card is a full-length card, is more robust, allows bridging (i.e. conferencing of two lines within the card), and you can move calls from one card to another (if you are using multiple cards).
It also has more memory. Suitable for applications above as well as for smaller towns and cities (due to its robustness), for smaller Call Centers, and any advanced use. (We do not currenly use the D/41ESC boards in any systems.)